How to plot (inline) with rpy2 in Jupyter notebook?

It seems that this is the answer to your question: https://bitbucket.org/rpy2/rpy2/issues/330/ipython-plotting-wrapper

with rpy2.robjects.lib.grdevices.render_to_bytesio(grdevices.png, width=1024, height=896, res=150) as img:
    graphics.barplot(IntVector((1,3,2,5,4)), ylab="Value")
IPython.display.display(IPython.display.Image(data=img.getvalue(), format='png', embed=True))